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Finding the Fourth Proportional to 172,349.92, 258,522.94 and 67,242.70

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Solution

The fourth proportional to 172,349.92, 258,522.94 and 67,242.70 is: 100,863.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,349.92 : 258,522.94 = 67,242.70 : x
  2. Step 2: Convert to fraction form
    172,349.92/258,522.94 = 67,242.70/x
  3. Step 3: Cross multiply
    172,349.92x = 258,522.94 × 67,242.70
  4. Step 4: Simplify right side
    172,349.92x = 17,383,780,497.54
  5. Step 5: Solve for x
    x = 17,383,780,497.54/172,349.92
  6. Step 6: Final answer
    x = 100,863.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.